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ARM: Of course we’re not working on 128-bit mobile chips

Earlier this week the Korea Herald quoted an unnamed ARM(s armh) executive as saying 128-bit processors could make their way into mobile devices within a couple of years. On Friday the British chip design house, whose designs power the vast majority of mobile devices today, said the report was simply “not true”.

In a blog post the firm said, “64-bit processors are capable of supporting the needs of the computing industry now and for many years to come” and “there are absolutely no plans underway for 128 bit ARM-based chips because they simply aren’t needed.” Quite so — the mobile industry is only just starting to move to 64-bit architecture, which is arguably overkill for a smartphone’s current requirements.

2 Responses to “ARM: Of course we’re not working on 128-bit mobile chips”

  1. What you need to understand is there is no point in 128-bit because we will NEVER use up the trillions of gigabytes of address space! Especially seeing there has been a study that says most indirect addresses (90%) fit within 11bits so taking that into consideration and with reasonable virtual memory management I doubt you will EVER need 128-bit addressing and data processing only for advanced floating point accuracy on audio amongst other tasks

    • M. Edward Borasky

      No, you’ll never need 128-bit addressing for *phones*, but for high-performance computing, it’s a huge convenience to have a 128-bit address or floating point data word available to a programmer in one gulp.